Well, I'm quite an active player of a game called Arcane Legends and there, I scrolled down through the Stable list (a feature where you can see all the pets there) and interestingly found a pet that looks like the Boneknapper! It's skin is light green, what we all think the colour of Boneknapper's skin is, and it has bone armours.
It's cool, I wish I have the pet. I wonder if Spacetime Studios (the developer) got this idea from HTTYD. :P
By the way, I recommend you guys to check out Arcane Legends. It's a fun MMORPG and is available on mobile device and if I rememeber correctly, you can play it on PC online.